Comparison of Vector Control and Direct Torque Control of an induction machine

Two high performance induction machine torque control methods were compared. These methods included vector control and direct torque control (DTC). Both methods have been found to achieve a similar level of transient torque performance and offer similar levels of machine performances. DTC is disadvantaged due to the possibility of loss of flux control at lower speeds/loads, higher torque/current ripple, and the uncontrolled current transients. The vector control method has greater parameter sensitivity and the commissioning problems associated with setting up the current control loops.